static int
drawstripe(pdf_tensorpatch patch, fz_shade *shade, int ptr, int ncomp, int depth)
{
pdf_tensorpatch s0, s1;
split_stripe(&s0, &s1, &patch);
depth++;
if (depth >= SEGMENTATION_DEPTH)
{
ptr = triangulatepatch(s0, shade, ptr, ncomp);
ptr = triangulatepatch(s1, shade, ptr, ncomp);
}
else {
ptr = drawstripe(s0, shade, ptr, ncomp, depth);
ptr = drawstripe(s1, shade, ptr, ncomp, depth);
}
return ptr;
}
static void
draw_stripe(fz_context *ctx, pdf_tensor_patch *p, fz_shade *shade, int depth)
{
pdf_tensor_patch s0, s1;
/* split patch into two half-height patches */
split_stripe(p, &s0, &s1);
depth--;
if (depth == 0)
{
/* if no more subdividing, draw two new patches... */
triangulate_patch(ctx, s0, shade);
triangulate_patch(ctx, s1, shade);
}
else
{
/* ...otherwise, continue subdividing. */
draw_stripe(ctx, &s0, shade, depth);
draw_stripe(ctx, &s1, shade, depth);
}
}
static void
draw_stripe(fz_mesh_processor *painter, tensor_patch *p, int depth)
{
tensor_patch s0, s1;
/* split patch into two half-height patches */
split_stripe(p, &s0, &s1);
depth--;
if (depth == 0)
{
/* if no more subdividing, draw two new patches... */
triangulate_patch(painter, s1);
triangulate_patch(painter, s0);
}
else
{
/* ...otherwise, continue subdividing. */
draw_stripe(painter, &s1, depth);
draw_stripe(painter, &s0, depth);
}
}
